A trait-based approach to assess climate change sensitivity of freshwater invertebrates across Swedish ecoregions  

作　　者：Leonard SANDIN Astrid SCHMIDT-KLOIBER Jens-Christian SVENNING Erik JEPPESEN Nikolai FRIBERG 

机构地区：[1]Department of Bioscience and Arctic Centre, Aarhus University, VejlsФvej 25, DK-8600 Silkeborg, Denmark [2]Department of Aquatic Sciences and Assessment, Swedish University of Agricultural Sciences, P.O. Box 7050, SE-750 07 Uppsala,Sweden [3]Department Water, Atmosphere, Environment, Institute of Hydrobiology and Aquatic Ecosystem Management, University of NaturalResources and Life Sciences, Max-Emanuel Strasse 17, 1180 Vienna, Austria [4]Department of Bioscience, Aarhus University, Ny Munkegade 114, DK-8000 Aarhus, Denmark [5]Sino-Danish Center for Education and Research, Beijing, China [6]Norwegian Institute for Water Research, Gaustadall6en 21, NO-0349 Oslo, Norway

出　　处：《Current Zoology》2014年第2期221-232,共12页动物学报（英文版）

摘　　要：Freshwater habitats and organisms are among the most threatened on Earth, and freshwater ecosystems have been subject to large biodiversity losses. We developed a Climate Change Sensitivity （CCS） indicator based on trait information for a selection of stream- and lake-dwelling Ephemeroptera, Plecoptera and Trichoptera taxa. We calculated the CCS scores based on ten species traits identified as sensitive to global climate change. We then assessed climate change sensitivity between the six main ecoregions of Sweden as well as the three Swedish regions based on lilies. This was done using biological data from 1,382 stream and lake sites where we compared large-scale （ecoregional） patterns in climate change sensitivity with potential future exposure of these ecosystems to increased temperatures using ensemble-modelled future changes in air temperature. Current （1961-1990） measured temperature and ensemble-modelled future （2100） temperature showed an increase from the northernmost towards the southern ecoregions, whereas the predicted temperature change increased from south to north. The CCS indicator scores were highest in the two northernmost boreal ecoregions where we also can expect the largest global climate change-induced increase in temperature, indicating an unfortunate congruence of exposure and sensitivity to climate change. These results are of vital importance when planning and implementing management and conservation strategies in freshwater ecosystems, e.g., to mitigate increased temperatures using riparian buffer strips. We conclude that traits information on taxa specialization, e.g., in terms of feeding specialism or taxa having a preference for high altitudes as well as sensitivity to changes in temperature are important when assessing the risk from future global climate change to freshwater ecosystems [Current Zoology 60 （2）： 221-232, 2014].

关 键 词：Climate change Indicators Traits FRESHWATER MACROINVERTEBRATES ECOREGIONS 

分 类 号：Q959.1[生物学—动物学] P467[天文地球—大气科学及气象学]